Insulating cup sleeve



FIG. 1 is a top perspective view of the design of an insulating cupsleeve showing the new design;

FIG. 2 is a bottom perspective view of the insulating cup sleeve shownin FIG. 1; and,

FIG. 3 is a front elevation view of the insulating cup sleeve shown inFIG. 1 (the rear elevation view, the left elevation view and the rightelevation view of the insulating cup sleeve are each an identical imageof the view shown in FIG. 3).

The broken lines shown in the drawing views are included for the purposeof showing environmental structure or boundary lines that forms no partof the claimed design.

CLAIM The ornamental design for an insulating cup sleeve, as shown anddescribed.